Carbon-baking box



(No Model.)

W. J. POSSONS.

GARBONBAKING B0X.

No. 331,440, y Patented Dec. 1, A1885.

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VILLIAM J. .POSSONS, OF CLEVELAND, OHIO.

CARBONBAKING BOX.

SPECIFICATION forming part of Letters Patent No. 331,440, dated December1, 1885.

Application filed April 11, 1884. Serial No. 127,490. (No model.)

is customary'to make such receptacles in the' shape of plain cast-ironboxes, the carbons being packed therein with sand and covered withaplate of suitable material resting upon the sand and'sealed to thesides with suitable luting. Such boxes, however, under the intense heatof the baking-oven and the pressure of the sand from within frequentlybulge out and crack at the sides, thus burning the carbons and allowingthem to become displaced and warped. To obviate these difficulties, Iform the walls of the receptacle of slabs or plates of refractorymaterial, such as soapstone, which form a non-yielding support for thecarbons and complete protection against burning. These plates may besupported by any suitable means, but I prefer to use them as a lining tothe customary iron box, the box holding the plates in their properpositions and the plates preventing undue strain upon the sides of thebox, as well as insuring the carbons against burning and displacement.Vith this safeguardI am enabled to pack the carbons vertically insteadof horizontally, without the risk of their falling apart and becomingwarped. rIhis allows about fifty per cent. more carbons to a box anddecreases largely the percentage of crooked carbons. By the use of theserefractory plates with the iron boxes the latter lasts longer, Wherebyiseffected a saving not only 'in the cost of boxes, but in the waste whichgenerally ensues when abox breaks. To further secure this object, and toprevent the destruction of the seal by the sinking of the cover, I formor cast a rib around the inside of the iron box a slight distance belowthe top, for the purpose of adding rigidity to the sides and Vforming asupport for @ove/rv My improvements more specifically comprise asupplementary or false bottom, supported by suitable ribs a slightdistance above the bottom of the box, and upon which the ends of thecarbons rest. It serves to equalize the heat and prevent the burning ofthe ends of the carbons. I also improve the construction of .the box bycasting or forming ribs upon the under surface of the bottom, to allowof the free circulation of the heat and to add strength to the box.

In the accompanying drawings, Figure 1 represents a crosssection of afilled box. Fig. 2 is alongitudinal section of the box, ready forfilling.

a is the outer box, ordinarily of cast-iron. b is the cover, which maybe a refractory tile of any suitable material, aud cis a heavystrengthening and supporting rib cast with the box, and upon which thecover rests. d are the slabs ci' soapstone forming the refractory liningfor the walls of the box. They may be placed up close to the walls, butIprefer to leave a small space between them, as shown, for a packing ofsand, which is poured in through the crevice at the top.

The supplementary bottoni e may be made of a piece of sheet-iron andheld up by ribsf, secured to it by rivets or otherwise. I also reservethe right to use in connection with the slabs of soapstone on the sidesa similar one on the bottom in place of the iron bottom c.

At g are shown the ribs cast on the bottom of the box for the purposeabove set forth.

The supplementary bottom and sides having been put in place, the innerspace is completely filled with carbons h, points downward, as shown.Sand is then poured in until all the intersticesj are nlled and thecarbone covered about an inch deep. The cover is then put in place onthe rib c and sealed with refractory luting t'.

A box constructed and protected in this way will stand a great manysuccessive beatings without injury, and when the iron does give way therefractory slabs still prevent injury to the carbons.

Having thus described my improvements, what I claim as new and of myinvention is-- l. A receptacle for holding carbons during the bakingprocess, consisting of a metal box provided with a cover, andindependent slabs IOO or plates of refractory material, substantially asdescribed, located adjacent to the inner sides of the boX, substantiallyas set forth.

2. A receptacle for holding carbons during the baking process,consisting of a metal boX provided with a cover, and slabs or plates ofrefractory material as described, situated within the box at its sidesand ends, substantially as set forth.

8. A receptacle for holding carbons during the baking process,consisting of a metal box having a lining of refractory material, andhaving a supplemental floor or bottom provided With heat circulatingspaces on its under side, substantially as set forth.

4. A receptacle for holding carbons during the baking process,consisting of a cast metal boX having alining of refractory material andhaving inwardly-projecting ribs or ledges, in combination with a coveradapted to be supported on said ribs or ledges, substantially as setforth.

In testimony whereof I sign this specification, in the presence of twoWitnesses, this 5th day of April, 1884.

WILLIAM J. POSSONS.

Witnesses:

W. H. KNIGHT, N. S. PossoNs.

